Going for that perfect cosplay, but your skin won't cooperate? Take care of that with a visit to Tria Plastic Surgery.
You can change your skin color at the Plastic Surgery office. To enter the Plastic Surgery Office, click on the "Plastic Surgery Office" icon from the Life Skill menu in the bottom-right of your screen.
Talk to Doctor Zenko to get things started.
Selecting a different color will preview the color on your character.
When you're all set, click on "Change" to complete the adjustment.